Direct laser welding of a Cr-Si alloyed coating-free press-hardened steel

Qing Zhou; Zhao Li; Lingyu Wang; Wei Xu; Luning Wang; Fei Wang

doi:10.2991/978-94-6463-581-2_73

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Direct laser welding of a Cr-Si alloyed coating-free press-hardened steel

Authors

Qing Zhou¹, Zhao Li¹, Lingyu Wang¹^{, *}, Wei Xu¹, Luning Wang², Fei Wang²

¹State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang, Liaoning, 110819, China

²Technical Center of Ben Gang Group Corporation, Ben Gang Group Corporation Co. Ltd., Benxi, Liaoning, 117021, China

^*Corresponding author. Email: wanglingyu@ral.neu.edu.cn

Corresponding Author

Lingyu Wang

Available Online 7 December 2024.

DOI: 10.2991/978-94-6463-581-2_73 How to use a DOI?
Keywords: Coating-free; Press hardened steel; Direct laser welding; Weld microstructures
Abstract: The Al-Si-coated 22MnB5 steel used for press hardening is a pivotal lightweight material for advancing automotive weight reduction and safety standards. However, the formation of brittle δ-ferrite in the Al-Si coating during welding reduces the mechanical performance of the weld. In this investigation, a pioneering high-temperature oxidation-resistant press hardened steel was demonstrated to enable ablation-free laser welding. Laser welding and hot stamping tests were conducted at various power settings while maintaining a constant welding speed. The influence of laser power on microstructure and mechanical properties were investigated. Results show uniform strength and improved mechanical properties after thermal forming. This study advances high-quality laser welding for thermoplastic forming steel, optimizing efficiency and offering valuable insights for practical deployment.
Copyright: © 2024 The Author(s)
Open Access: Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title: Proceedings of the 7th International Conference on Advanced High Strength Steel and Press Hardening (ICHSU 2024)
Series: Atlantis Highlights in Material Sciences and Technology
Publication Date: 7 December 2024
ISBN: 978-94-6463-581-2
ISSN: 2590-3217
DOI: 10.2991/978-94-6463-581-2_73 How to use a DOI?
Open Access: Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

ris enw bib

TY  - CONF
AU  - Qing Zhou
AU  - Zhao Li
AU  - Lingyu Wang
AU  - Wei Xu
AU  - Luning Wang
AU  - Fei Wang
PY  - 2024
DA  - 2024/12/07
TI  - Direct laser welding of a Cr-Si alloyed coating-free press-hardened steel
BT  - Proceedings of the 7th International Conference on Advanced High Strength Steel and Press Hardening (ICHSU 2024)
PB  - Atlantis Press
SP  - 609
EP  - 616
SN  - 2590-3217
UR  - https://doi.org/10.2991/978-94-6463-581-2_73
DO  - 10.2991/978-94-6463-581-2_73
ID  - Zhou2024
ER  -

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